上一篇写的是使用GET请求获取数据。这一篇试试Post请求获取数据，创建一个Java文件BusController：
屏幕快照 2018-12-25 下午2.45.08.png
然后是编码：
package com.bianla.demotestspringboot;
import org.springframework.web.bind.annotation.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@RestController
public class BusController {
//创建一个查询的helper
private BusQueryHelper helper = new BusQueryHelper();
//声明api的接口，请求方式
@RequestMapping(value = "api/queryBus",method = RequestMethod.POST)
//使用busParam对象来接收请求体
public Object CheckoutBus(@RequestBody BusParam param){
String busNo = param.getBusNumber();
String curStop = param.getCurrentStop();
String dir = param.getDirection();
//调用helper的查询方法
return helper.queryAction(busNo,curStop,dir);
}
}
class BusParam{
//这里BusParam的三个属性字段，需要前端与该字段保持一致，即post的key分别为这三个字段
private String busNumber;//公交车号
private String currentStop;//当前的站点
private String direction;//方向
public void setBusNumber(String busNO){
this.busNumber = busNO;
}
public String getBusNumber(){
return busNumber;
}
public void setCurrentStop(String curStop){
this.currentStop = curStop;
}
public String getCurrentStop(){
return currentStop;
}
public void setDirection(String dir){
this.direction = dir;
}
public String getDirection(){
return direction;
}
}
//查询的类
class BusQueryHelper {
//传入公交车号、当前站点、方向
public Object queryAction(String busNO,String currentStop,String direction){
Map<String,Object> map = new HashMap<String, Object>();
//查询成功 模拟
if (busNO.equals("706") && currentStop.equals("明珠路") && direction.equals("1")){
map.put("result","1");
map.put("nextStop","京华路");
map.put("waitingTime","3分钟");
map.put("restStopCount","5");
List<String> stopList = new ArrayList<String>();
stopList.add("京华路");
stopList.add("华徐公路");
stopList.add("蟠龙路");
stopList.add("蟠秀路");
stopList.add("徐泾东站");
map.put("restStops",stopList);
return map;
}
//查询失败
map.put("result","0");
map.put("message","未查询到班次");
return map;
}
}
前端代码(iOS)：
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor colorWithRed:234/255.f green:234/255.f blue:234/255.f alpha:1.0];
[self testQueryBus];
}
- (void)testQueryBus{
NSMutableDictionary *param = [NSMutableDictionary dictionary];
[param setObject:@"706" forKey:@"busNumber"];
[param setObject:@"明珠路" forKey:@"currentStop"];
[param setObject:@"1" forKey:@"direction"];
[self requestPostWithParam:param withUrlString:@"[http://localhost:8080/api/queryBus](http://localhost:8080/api/queryBus)"];
}
- (void)requestPostWithParam:(NSDictionary*)param withUrlString:(NSString*)urlString
{
//1 获取URL
NSURL *url = [NSURL URLWithString:urlString];
//构建请求参数
//2 初始化manager
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
// manager的响应类型
manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
//3 使用AFNetWorking的GET方法进行网络请求
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[manager POST:url.absoluteString parameters:param progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
if ([responseObject isKindOfClass:[NSDictionary class]]) {
NSDictionary *dic = (NSDictionary*)responseObject;
NSLog(@"dic内容:%@",dic);
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
}];
});
}
效果：
屏幕快照 2018-12-25 下午3.55.00.png
梳理图：
屏幕快照 2018-12-25 下午3.15.05.png
加油～
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